Monkey wrench



7 Sept. 17 1929? E. J. EVANS MONKEY WRENCH Filed July 22, 1927 (dw/A J.[Vans aumwwq Patented Sept. 17, 1929 UNITED STATES EDWIN J. EVANS, F

MONKEY Application filed July 22,

My invention relates to wrenches, and particularly to monkey wrenches,and has for 1ts object to provide a new quick-acting monkey wrench foruse on all types of machinery.

A further object is to provide a wrench which will be strong,quick-acting, easily adjusted and easily handled.

A still further object is to provide a wrench which will be veryeconomical to build and will be light in weight, economizing inmaterials when building it.

These objects I accomplish with the device illustrated in theaccompanying drawings, in which similar numerals and letters ofreference indicate like parts throughout the several views and asdescribed in the specification forming a part of this application andpointed out in the appended claims.

In the drawings, in which I have shown the best and most preferredmanner of building my invention, Figure 1 is a side elevation of thewrench. Figure 2 is a view of one-half of the head or jaw of the wrench.Figure 3 is a view of the other half of the head. Figure 4: is a sideview of the handle of the wrench. Figure 5 is a plan view of the slidingnut. Figure 6 is a view of the bar of metal used to make the threadedportion of the wrench. Figure 7 is an end view of the same.

In the drawings I have shown the handle A of the wrench as made up of abar of metal bent or stamped to form a U-shaped handle, with notches 1out along one inner side of one leg of the said handle. The head B ofthe wrench and the sliding jaw C are made by stamping, from sheet metal,halves 3 and l, as shown in Figures 2 and 3. The said halves of metalare provided with semi-circular holes 5, 6 and 7, so that when twohalves are placed face to face the holes pass therethrough from top tobottom. Both the head and the jaw are made alike and when the halves 3and 4 are placed together the two pieces are welded together by electricwelding or other similar processes, and the handle portion A is thensecured in the head, with both legs passing through the holes 5 and 7 ofthe C. The holes 5 and 7 of the jaw C are slightly larger than thediameter of the legs of the handle portion A and a tap is then runthrough the VENICE, CALIFORNIA WRENCH I 1927. Serial No. 207,665.

oentralhole 6, forming threads therein. The L i threaded or screwportion Dof the wrench is made by taking a bar of metal 8, having a flatportion 9 formed on one end thereof, andcut-' ting threads 10 in thesaid bar 8 to, fit the threads 6 formed in the hole 6 of the jaw O.

The flat portion 9 is then twisted to form a quick-acting screw thread9. i A sliding nut F is then provided, having a hole 16 mediallytherethrough threaded to fit the threads of the screw 9 and with twospaced apart holes 11 and 12 bored therethrough of slightly largerdiameter than the legs of the handle portion A on which the nut operateswhen the wrench is assembled. A spring 13 is then secured to one side ofthe said nut F, which spring has a bend therein at right angles to themain body thereof and with a hole lat boredther'ethrough larger than thediameter of the leg of the handle,with one side of the said hole havinga portion as acord of a circle left therein to engage with the notches 1of the said handle so that when the spring is re-' leased it will holdthe nut F from sliding in eitherdirection on the handle.

To assemble my wrench the lower end of the portion D is tapered and isinserted in a hole bored in the inner face 01" the lower or U-shapedportion ofthe handle, the sliding nut F is placed on the screw portion 9with the holes 11 and12 over the legs of the handle I I and with thespring 13 adapted to engage with i the notches l of one leg of thehandle. The jaw C is then placed on the. legs of the handle with theholes 5 and 7 over the saidlegs and with the threads of the hole 6engaging with I the threads lOof the screw portion D. The head Bof thewrench is then placed over the ends of the legs of the handle and weldedthereto, and a plug of metal is placed. in the top of the hole 6 abovethe end of the screw portion D, which is fitted therein. With the headand the jaw welded together and the head welded. onto the handle, thewrench is ready for use.

The operation of my wrench is as follows:

WVhen it is desired to engage a bolt head or a nut the head of thewrench is placed over the nut andthe sliding nut F moved until the jaw Cis in engagement with the other side of the nut. The spring 13 is thenengaged with the notches 1 and the nut may be turned in either directionwithout the wrench becoming loosened or coming oil from the nut. Todisengage the wrench the finger of the operator is pressed against thespring 13, disengaging it from the notch, and the sliding nut F may thenbe moved, releasing the wrench by moving the j aw C away from the nut.

Having thus described my invention I de sire to secure by Letters Patentand claim 1. In a wrench of the class described, the combination of ahandle portion formed by bending a metal bar in a U-shape, with notchesformed on the inner side on one'of said legs of said handle; a headsecured on the free ends of the legs of said handle forming one jaw ofthe wrench; a jaw slidable on said handle, having holes therethroughadapted to slide on said legs, and with a central threaded holetherethrough; a threaded screw portion carried between said head and thebend in said handle, having the top portion thereof with a slow threadcut therein, on which said jaw is carried, and the lower end of saidportion formed into a twisted screw; a sliding nut carried on saidhandle, with a threaded hole therethrough adapted to rotate the screwportion of said screw when it is moved up and down said handle; and aspring secured to said nut having a hole therethrough, through which oneleg of said handle is passed, said spring adapted to engage with thenotches on the leg of said handle to prevent said nut and coacting partsfrom moving.

2. In a wrench of the class described the combination of a handleportion formed by bending a metal bar in a U-shape, with notches formedon the inner side of one of said legs; a head secured on the free endsof said legs forming one aw of the wrench a jaw slidable on said handlehaving holes therethrough adapted to slide on said legs, and with athreaded hole centrally therethrough'; a double threaded screw portioncarried between said head and the bend in said handle with thetopthread, a slow thread and the lower thread in the form of a twistedscrew; a sliding nut carried on said handle having a hole therethroughadapted to rotate said screw portion when the nut is moved on saidhandle; and a spring secured on said nut with one end portion adapted toengage in said notches in the handle to prevent the'nutfrom movingexcept when said spring is disen gaged.

In testimony whereof I have aflixed my signature.

EDWIN J. EVANS.

